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ddd [48]
3 years ago
6

A bookstore is having a sale in which customers can purchase 10 books for a price of b dollars. Which expression represents the

price of a single book?
A) b/10
B) 10b
C) 10 - b
D) 10/b
HELP ASAP!
There's 10 questions!
Mathematics
2 answers:
kirill115 [55]3 years ago
4 0

The answer is D.........

Luden [163]3 years ago
3 0

Answer: A) \dfrac{b}{10}

Step-by-step explanation:

Given : A bookstore is having a sale in which customers can purchase 10 books for a price of b dollars.

i.e. the cost of 10 books = b

Then, by applying the unitary method , the price of each book will be \dfrac{b}{10}

Therefore, the  expression represents the price of a single book is \dfrac{b}{10}.

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If 2cm rep 24 what length will be rep by 3cm​
sergejj [24]

Answer:

Step-by-step explanation:

So 1cm rep = 24 ÷ 2 = 12

So 3cm rep = 12 x 3 = 36

3 0
3 years ago
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How do you solve for this: f(x)=60-0.18x
Alexxandr [17]
You can put it in a graphing calculator.

X             Y
-2            59.64
 -1           59.82
 0            60
 1            60.18
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Thats it. and you just graph it 
6 0
4 years ago
17. Which of the following is TRUE? ( 5 points) a. The mean tells us, roughly, how much the data deviate from the average. b. Th
svp [43]

Answer:

c. The Mean of Normal Distribution is related to the average of the data set. The Standard deviation is related to data variation.

Step-by-step explanation:

(a) No, mean don't tell us how much the data deviate from the average, Standard deviation tells us. So, Option (a) is incorrect.

(b) No, mean is greatly affected by extreme values. But Median is good to measure central tendency when there is outlier present in data. So, Option (b) is also incorrect.

(c) Here Mean and Standard deviation are correctly defined. Hence, this is only the correct answer.

(d) No, It is the definition of mean not of Standard Deviation. So, this option is also incorrect.

Further, Mean is used to measure the central tendency of data which represents the whole data in the best way. It can be found as the ratio of the sum of all the observations to the total number of observations.

4 0
3 years ago
Multiply the following: show your SOLUTIONS
abruzzese [7]
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5 0
3 years ago
Evaluate the surface integral ModifyingBelow Integral from nothing to nothing Integral from nothing to nothing With Upper S f (x
kykrilka [37]

Parameterize S by

\vec s(u,v)=6\cos u\sin v\,\vec\imath+6\sin u\sin v\,\vec\jmath+6\cos v\,\vec k

with 0\le u\le2\pi and 0\le v\le\frac\pi2. Take a normal vector to S,

\dfrac{\partial\vec s}{\partial v}\times\dfrac{\partial\vec s}{\partial u}=36\cos u\sin^2v\,\vec\imath+36\sin u\sin^2v\,\vec\jmath+36\cos v\sin v\,\vec k

which has norm

\left\|\dfrac{\partial\vec s}{\partial v}\times\dfrac{\partial\vec s}{\partial u}\right\|=36\sin v

Then the integral of f(x,y,z)=x^2+y^2 over S is

\displaystyle\iint_Sx^2+y^2\,\mathrm dS=\iint_S\left((6\cos u\sin v)^2+(6\sin u\sin v)^2\right)\left\|\frac{\partial\vec s}{\partial v}\times\frac{\partial\vec s}{\partial u}\right\|\,\mathrm du\,\mathrm dv

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6 0
4 years ago
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